Backlight module and display device

Abstract

The invention provides a backlight module and a display device. The backlight module comprises a light guide plate, a back plate, an optical film, frame sealing glue and a light shielding assembly, wherein the back plate is arranged at one side of the light guide plate, a positioning convex part is arranged on the back plate, the optical film is arranged at one side, far away from the back plate, of the light guide plate, a positioning notch used for allowing the positioning convex part to be inserted for realizing the matching effect with the positioning convex part and realizing the assembly positioning on the optical film is formed in the optical film, the frame sealing glue is arranged on the periphery of the circumference of the light guide plate and at least comprises a covering part, the covering part is positioned at one side, far away from the light guide plate, of the optical film and covers the edge position of the optical film, an avoiding hole which corresponds to the position of the positioning convex part and is used for avoiding the positioning convex part arranged on the back plate is formed in the covering part, the light shielding assembly is used for covering and shielding the avoiding hole, and is arranged in a position corresponding to the avoiding hole. The back light module provided by the invention has the advantages that the light shielding assembly is arranged in the position of the avoiding hole of the glue sealing frame, and the point light leakage phenomenon caused by the existence of the avoiding hole in the frame sealing glue of the back light module can be avoided.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module and a display device. Background technique [0002] Due to the advantages of low operating voltage, low power consumption, flexible display methods, and low radiation, Liquid Crystal Displays (LCDs) are widely used in various fields, such as computers, mobile phones, televisions, and measurement displays. The LCD includes a liquid crystal display panel, and the liquid crystal display panel includes a thin film transistor substrate, a color filter, and a layer of liquid crystal molecules interposed between the two substrates. In addition, the LCD also includes a backlight module, which is used to provide a light source for the liquid crystal display panel, so that the LCD can display images. [0003] Such as figure 1 Shown is a schematic structural diagram of a traditional backlight module. Such as figure 1 As shown, a traditional backlight module includes ...

AI Technical Summary

Problems solved by technology

[0004] In the backlight module in the prior art, since the height of the positioning protrusion 10a should not be too high, the optical film 40 is usually not suitable for operation when assembling. It falls off from the matching part of the positioning protrusion 10a and the positioning notch 40a, causing the optical film 40 to be crushed during assembly; at the same time, because the corresponding position of the sealing glue 30 is provided with an avoidance hole 30a, it is easy to cause a point when viewed from a large viewing angle. Light leakage affects the picture quality used by customers

[0005] At present, the main solution to the above problems is to widen the width of the silicon rubber (silicon rubber) to cover the avoidance hole on the sealant, or make the sealant into a closed state (that is, there is no avoidance hole on the sealant) , but the problem with this is that the silicone rubber will have an attachment error during the attachment process, and will increase the cost at the same time, and if the avoidance hole on the sealant is closed, it will easily rub against the positioning protrusion on the back plate Debris is generated, causing scratches caused by foreign objects

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